"This rifle is amazing. This rifle competes with KWAs quite favorably in every aspect other than ROF, but this rifle shoots incredibly fast with the 9.6 volt it comes with. I've had the gun for over a year now and probably 10k rounds fired from it and the hop up still works excellently and the buttery and spring do as well. I've charged the battery on a smart charger only, so that most likely helped the battery. The polymer on this gun is fantastic, I swung around and smacked a tree pretty hard once and the polymer didn't even have a mark. The over all quality and performance of this gun for the price is spectacular, I am still using the battery, spring, motor, and hop up the gun came with in fact the only thing I have changed or added to the gun since I bought it was I put a BSA red dot on for an optic. Great gun you won't regret it."